# [NTG-pdftex] Synchronization

Taco Hoekwater taco at elvenkind.com
Tue Feb 12 09:39:47 CET 2008

Hans Hagen wrote:
> LAURENS Jérôme wrote:
>
>> \tracesynctexpositions=0:disabled
>> \tracesynctexpositions=1:math, kern, glue, hbox
>
> so, variant 2 and 3 are influencing the node lists (I assume that this
> does not influence the outout i.e. no inhibiting of the \last...
> primitives etc (sometimes whatsits can get in the way)

I assume they will just be adding more output for other node types
for .."). The point of this patch, iiuc, is that there is no need for
node list manupilations.

>> The purpose of the lower precision in synctex end is simply to reduce
>> the size of the auxiliary output file.
>> If we use full resolution, then the size increases by 40%, which is -
>> very- significant because I/O operations are involved.
>> 8192 is the best choice for that purpose.

It would be interesting to have the full precision as an option.
A macro package for two-pass page break optimization may want to
use the synctex file also , and such a package would really need
full precision to avoid rounding errors.

Best wishes,
Taco